Sirunyan, Albert M
ARGUS
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Production of D(s)+ mesons in B decays and determination of f(D(s))

The ARGUS collaboration Albrecht, H. ; Ehrlichmann, H. ; Hamacher, T. ; et al.
Z.Phys.C 54 (1992) 1-12, 1992.
Inspire Record 319829 DOI 10.17182/hepdata.14705

The production ofDS+ mesons inB meson decays, and inq\(\bar q\) continuum events, has been studied with the ARGUS detector at thee+e− storage ring DORIS II. In addition to the measurement of inclusiveDS+ production in γ(4S)→B\(\bar B\) decays, all eight two-body decay modesB→DS(*)D(*) have been measured with branching ratios between 1% and 3%. By comparing our inclusive and exclusive results to predictions of heavy quark effective theory, a value of (267±28) MeV × [2.7%/BR(Ds+→φπ+)]1/2 is obtained for the weak decay constant fDS(*), averaged overDS+ andDS*+ mesons.

1 data table match query
Table 1

Inclusive D/S cross sections in continuum near to UPSI(4S).


rivet Analysis
Inclusive production of eta-prime (958) and f0 (975) mesons in the upsilon energy region

The ARGUS collaboration Albrecht, H. ; Ehrlichmann, H. ; Hamacher, T. ; et al.
Z.Phys.C 58 (1993) 199-206, 1993.
Inspire Record 342061 DOI 10.17182/hepdata.14425

The inclusive production cross sections of η′ (958) andfo (975) mesons are measured ine+e− annihilation in the nonresonant continuum around\(\sqrt s= 10\) GeV and in decays of the υ resonances using the ARGUS detector. For η′ (958) mesons, a production ratio of η′ (958)/ηdir=0.35±0.24, with ηdir=η−BR(η′→ηX)·η′, is determined in direct υ(1S) decays, which can be partially explained by the pseudoscalar singlet/octet mixing. Forfo(975) production, we obtain a production ratio offo(975)/p(770)°=0.17±0.030 in direct υ(1S) decays. In its production features, thefo(975) behaves like an ordinary meson, though aK\(\bar K\) molecule nature cannot be excluded. The substantial production yield of thefo(975) meson demonstrates the important effect of feeddown from mesons beyond the basic multiples on pseudoscalar and vector meson production.

5 data tables match query
Table 1

Direct etaprime rates per event for the continuum region (9.36 to 10.45 GeV), the UPSI(1S) (9.46 GeV), UPSI(2S)(10.02 GeV) and UPSI(4S)(10.58 GeV) regions. Data is extrapolated to the full z region.

Table 2

Radiation corrected normalized cross section for F0(975) production in the continuum events.

Table 3

Normalized cross section for F0(975) production in direct UPSI(1S) decays.

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Two Photon Production of Final States With a $p \bar{p}$ Pair

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.
Z.Phys.C 42 (1989) 543, 1989.
Inspire Record 267759 DOI 10.17182/hepdata.15473

Two-photon production of the exclusive final statesp\(\bar p\)+nπ (n=0, 1, 2, and 3) has been investigated using the ARGUS detector at thee+e− storage ring DORIS II at DESY. The reactionsγγ→p\(\bar p\)π andγγ→p\(\bar p\)π+π−π0 have been observed for the first time, as have theΔ++ and\(\overline {\Delta ^{ ++ } } \) baryons in the final statep\(\bar p\)π+π−. No evidence was found forΔ++\(\overline {\Delta ^{ ++ } } \) production. Topological cross sections for two-photon production ofp\(\bar p\),p\(\bar p\)π0,p\(\bar p\)π+π− andp\(\bar p\)π+π−π0, as well as the crosssection forγγ→Δ++\(\bar p\)π+π−+c.c., have been measured. Upper limits are given for the cross section forγγ→Δ0\(\overline {\Delta ^0 } \),γγ→Δ++\(\overline {\Delta ^{ ++ } } \) andγγ→Λ\(\bar \Lambda \).

7 data tables match query
Table 1

Data read from graph.. Additional overall systematic error 13% not included.

Table 2

Data read from graph.. Additional overall systematic error 13% not included.

Table 3

Data read from graph.. Additional overall systematic error 13% not included.

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